By Arindam Banik and Muhtor Nasirov The world is currently grappling with the devastating impact of climate change, as rising temperatures have become an undeniable reality. In January 2024, the global temperature exceeded normal levels for the second consecutive month, pushing the global average temperature over the 1.5-degree threshold for the first time. Many human activities, such as unplanned water use, excessive groundwater extraction, and climate change, are thought to be contributing to this situation. One poignant example is the case of the Aral Sea in Central Asia. This once breathtaking and teeming endorheic lake, nestled between Kazakhstan and Uzbekistan, was not just a body of water. It was a symbol of life, a testament to the beauty and resilience of nature. Its azure waters and diverse marine life were a source of sustenance and livelihood for the region's people. It was a vibrant ecosystem, nourished by the almost entire flow of the two main rivers, the Amu Darya and the Syr Darya, in the upstream region of Central Asia. Interestingly, the Amu Darya River used to flow into the Caspian Sea through Uzboy Channel. However, a significant shift occurred during human settlement when the flow of these rivers was redirected into the Aral Sea, marking a crucial turning point in the region's hydrological history. Despite its former glory as the third-largest lake in the world, covering an area of 68,000 km2 (26,300 sq miles), the Aral Sea began shrinking in the 1960s after the rivers that fed it were diverted to support large-scale irrigation for cotton production intended for export. The irrigated area in the Aral Sea Basin has now expanded to eight million hectares. By 2007, it had decreased to only 10 percent of its original size, dividing into four lakes. By 2009, the southeastern lake had vanished, and the southwestern lake had shrunk to a thin strip at the western edge of the former southern sea. In the following years, occasional water flows partially replenished the southeastern lake. In August 2014, NASA satellite images revealed that the eastern basin of the Aral Sea had completely dried up, leading to the formation of the Aralkum Desert. This dramatic change has severely impacted the ecology, risking the survival of numerous fish subspecies and three endemic sturgeon species. The loss of these species disrupts the natural balance and affects the livelihoods of the local communities that depend on fishing. The herring, sand smelt, and gobies were the first planktivorous fish in the lake, and their decline led to the lake's zooplankton population collapse. Consequently, the herring and sand-smelt populations have not recovered. Except for the carp, snakehead, and possibly the pipefish, all introduced species survived the lake’s shrinkage and increased salinity. In an attempt to revive fisheries, the European flounder was introduced. This situation is urgent as the delicate balance of this ecosystem is on the verge of collapse. The region's once-prosperous fishing industry has been devastated, leading to unemployment and economic hardship. Additionally, the diverted Syr Darya River...
